Tschischewski BOK-5
Tschischewski BOK-5 | |
---|---|
Type: | Experimental flying wing |
Design country: | |
Manufacturer: | |
First flight: |
September 8, 1937 |
Number of pieces: |
1 |
The Tschischewski BOK-5 ( Russian Чижевсий БОК-5 ) was a Soviet experimental flying wing aircraft from 1937. It was developed in the Office for Special Constructions (BOK), a department within the ZAGI .
development
The designer Wladimir Tschischewski , who was also the head of the BOK, incorporated the experience he had gained in the construction of flying wings in the construction of flying wings into the BOK-5. The plane was made of metal with fabric-covered oars. The cantilevered, trapezoidal wing was designed with two spars and had a ZAGI-890 profile. The part of the wings behind the second spar could be adjusted by + 5 ° / -3 °. The actual ailerons and elevators running over the entire trailing edge of the wing were designed as split flaps (Junkers double wings). A five- cylinder radial engine Schwezow M-11 served as drive . The landing gear was rigid and mostly came from a Polikarpow U-2 .
The flight tests began on September 8, 1937. The BOK-5 was easy to control, had good flight stability and was suitable for aerobatics. Nevertheless, after the tests had been completed, a planned all-metal flying wing fighter was not implemented.
Technical specifications
Parameter | Data |
---|---|
crew | 1 |
length | 4.36 m |
span | 8.96 m |
Wing area | 23.15 m² |
Empty mass | 596 kg |
Takeoff mass | 764 kg |
drive | an air-cooled 5-cylinder radial engine Schwezow M-11 |
power | 81 kW (110 PS) |
Top speed | 174 km / h near the ground |
Landing speed | 85 km / h near the ground |
Summit height | 4850 m |
Range | 200 km |
Take-off / landing route | 125 m / 200 m |
See also
- ChAI-3
- Cheranovsky BITsch-7
- Kalinin K-12
- Belyayev DB-LK
- Putilov Stal-5
- Moskalev SAM-7 "Sigma"
- Moskalev SAM-9 "Strela"
- Flying wing
literature
- Wilfried Copenhagen : Lexicon Soviet Aviation . Elbe-Dnjepr, Klitzschen 2007, ISBN 978-3-933395-90-0 .
- V. B. Shavrov: History of aircraft construction in the USSR . ISBN 5-217-02528-X .
Web links
- БОК-5. Retrieved November 17, 2017 (Russian, history, data photos).